NSF award 2623281 · George Mason University

RAPID: Ecosystem Response to a Major Sewage Spill in the Potomac River Estuary: Disturbance, Contaminant Legacies, and Biological Thresholds

Final report due

28 September 2027

in 345 days · The award ends on 31 May 2027.

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Dates this award owes

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Decide about an extension31 Jan 2027in 105 days
award ending 2027-05-31 · Research.gov
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Extension request16 Apr 2027in 180 days
award ending 2027-05-31 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice21 May 2027in 215 days
award ending 2027-05-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due28 Sep 2027in 345 days
award ending 2027-05-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due28 Sep 2027in 345 days
award ending 2027-05-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out28 Sep 2027in 345 days
award ending 2027-05-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 31 May 2027.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 28 September 2027.

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Award card

Award number: 2623281
Period of support: 1 Jun 2026 – 31 May 2027
Amount: $299,886
Awardee: George Mason University, Fairfax, VA
Program: Org Interaction & Ecology
Directorate: BIO

Abstract

Acute nutrient pollution, such as raw sewages spills into waterways, represent one of the most pervasive and ecologically damaging stressors to freshwater and estuarine systems in the U.S., with recovery timescales often spanning decades. Changes in water quality and biodiversity immediately and soon after a pollution event are rarely studied in real time and are proposed to have outsized effects on the long-term…

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